In the traditional taxonomy of facial hair, a goatee is a beard formed by a tuft of hair on the chin. The word probably comes from the tuft of hair seen on an adult goat. In recent years, goatee has come to denote a style of facial hair that connects to a mustache, however this is under debate by many who retain that the goatee should be an isolated patch of facial hair. You don't get a much better example of a goatee than this.